<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <link rel="stylesheet" href="./assets/fonts/iconfont.css">
  <style>
    body,html{
      max-width: 750px !important;
      background-color: pink;
    }
    
  </style>
</head>
<body>
  <h1>hellow</h1>
</body>
</html>